Homeostasis can be likened to driving a car. If the speed limit in a certain highway is 60 kilometers per hour (km/h) and you are driving at a rate of 20 km/h, the cars behind you will become inconvenienced and will start blowing their horns. Thus, you step on the gas to speed up. Stimulus: Response: Type of mechanism:

Homeostasis can be likened to driving a car. If the speed limit in a certain highway is 60 kilometers per hour (km/h) and you are driving at a rate of 20 km/h, the cars behind you will become inconvenienced and will start blowing their horns. Thus, you step on the gas to speed up. Stimulus: Response: Type of mechanism:

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter4: Tissues, Organs, And Organ Systems

Section: Chapter Questions

Problem 8SQ: In______, physical and chemical aspects of the body are being kept within tolerable ranges by body...

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If the oxygen level in the blood decreases, the brain sends a message to the lungs/diaphragm to breathe faster, which increases the levels of oxygen in the blood. This describes a negative or positive feedback loop.
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If the oxygen levels increased throughout your body, you would expect to see the following occur to bring levels back to homeostasis Group of answer choices A decrease in sympathetic activity to the smooth muscle of blood vessels An increase in heart rate An increase in stroke volume An increase in parasympathetic activity to the smooth muscle of blood vessels An increase in sympathetic activity to the heart
which of the following situations illustrates that a homeostatic mechanism is not operating properly? a. acute high blood pressure b. normalized blood glucose levels c. dailt fluid intake equals dailty fluid output d. all of these illustrate homestatic mechanisms operating properly
Which of the following is incorrect?a. Equilibrium requires a constant input of energy.b. Positive feedback is less common in nature than negative feedback.c. Homeostasis does not imply that a given variable is unchanging.d. Fever is an example of resetting a set point.e. Efferent pathways carry information away from the integrating center of a reflex arc.
When people think of the respiration system, they often think of breathing in and out to get air into the lungs. Is there more to the process? Please describe what else, if anything, must happen to maintain homeostasis.
Read the following scenario and determine the parts of the homeostasis feedback loop. When a human increases physical activity, the amount of fuel burned in its cells also increases, which in turn increases the concentration of dissolved CO2 in the blood. The CO2 reacts with water in the blood to make a weak acid, which lowers the pH of the blood. Sensory cells in the aortic arch register this drop in pH and send sensory information to the medulla oblongata of the brain. The medulla oblongata sends signals to the diaphragm to increase respiration. This will clear the CO2 from the bloodstream. A. Name the stimulus in this scenario. B. Explain what a receptor is in the homeostasis feedback loop and name the receptor in this scenario. C. Explain what an integrating center is in the homeostasis feedback loop and name integrating center in this scenario. D. Explain what an effector is in the homeostasis feedback loop and name the effector in this scenario. E. Name the response in this…
Two systems most responsible for maintaining homeostasis are the...
Riding a bicycle requires additional energy from leg muscles. Which of the following conditions may result from this activity, and which response helps restore the body to its normal condition? * decreased oxygen can be replaced by digesting an apple. increased carbon dioxide in the blood can be removed by breathing faster. increased sugars in the bloodstream can be diluted by drinking water. increased salt wastes can be removed by the heart. No answer
Which of these is a result of homeostasis?a. Muscular tissue is specialized to contract.b. Normal body temperature is always about 37°C.c. There are more red blood cells than white blood cells.d. Receptors in the eyes detect light.
In______, physical and chemical aspects of the body are being kept within tolerable ranges by body are being kept within tolerable ranges by controlling mechanisms. a. Positive feedback b. Negative feedback c. Homeostasis d. metastasis
Which of the following is an example of negative feedback? A. High blood sugar will increase the viscosity of blood plasma (plasma is concentrated). In response, water is drawn into the plasma from surrounding tissues in order to dilute the plasma B. Breathing rate increases during exercise to provide more oxygen to muscle cells. Heart rate also increase to increase the speed at which the oxygen is delivered. C. During digestion cells in the stomach produce HCl to begin breaking down proteins, the HCl then stimulates the release of pepsin, to continue breaking down proteins. D. In the immune system, antibodies produced by B-cells bind to antigens, which activates other B-cells to produce antibodies of the same kind.